Fen Bilimleri Enstitüsü: Recent submissions

  • Assessment of dynamic clustering in wireless sensor networks for the optimization of energy consumption 
    Balta, Aslı. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2011., 2011.)
    Wireless sensor networks are the networks that contain many sensors which have di erent type of abilities such as sensing, communicating or processing. In recent years there are many applications based on these kind of ...
  • VGA projection display using electromagnetically actuated steel micromirrors 
    Usta, Mehmet. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2011., 2011.)
    Projection display in VGA display format, which is 640x480 pixels in resolution, is aimed to be achieved using electromagnetically actuated steel micromirrors. In the work, the focus is the projection display control system ...
  • Integrated ultra-wideband receiver system and antenna design 
    Akkurt, Halit Kürşat. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2011., 2011.)
    Ultra wideband (UWB) is one of the important technologies among the communication types, which is able to reach high data rate in short distances. Wireless personal area networks and wireless sensor networks are the primary ...
  • Combined formation control and path planning for mobile robot networks 
    Dumlu, Semih Cemil. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2011., 2011.)
    In this thesis, formation control and path planning algorithms in mobile robot networks are examined for both fixed and dynamically changing interaction topologies. The system is modelled using graph-based framework where ...
  • Variable structure systems based online learning algorithms for type-1 and type-2 fuzzy neural networks 
    Çiğdem, Özkan. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2011., 2011.)
    Type-2 fuzzy logic systems are proposed in the literature as an alternative to type-1 fuzzy logic systems because of their abilities to more e ectively model rule uncertainties. This thesis extends the idea of using the ...
  • Pole assignment in linear multivariable systems 
    Zeytinoğlu, Mehmet. (Thesis (M.S.)- Bogazici University. Institute for Graduate Studies in Science and Engineering, 1981., 1981.)
    In this thesisppole assignment problem, one of the most commonly used control schemes, is considered and special emphasis is given on the application of avaliable pole assignment algorithms in multi-input systems. A very ...
  • Security analysis of ultralightweight RFID protocols 
    Aktaş, Serdar. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2011., 2011.)
    RFID (Radio Frequency Identi cation) is a technology that uses radio waves as a medium to exchange data between a reader and an electronic tag for the purpose of object identi cation and tracking. RFID tags are considered ...
  • Design of a power aware asynchronous AES circuit 
    Arslan, Salim Melih. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2011., 2011.)
    As the security and privacy awareness continuously arise, cryptographic services such as data con dentiality, integrity, authentication, and non-repudiation become an essential and indispensable part of digital systems and ...
  • Field programmable analog array design for biomedical applications 
    Çömlekçi, Coşkun. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2011., 2011.)
    The acquisition and processing of biomedical signals are important steps for clinical applications and academic research. Clinical applications involves diagnosis of diseases and also control of the prothesis or functional ...
  • Speaker verification for microphone suitable data and audio diarization for Turkish broadcast news 
    Yılmaz, Oğuz. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2011., 2011.)
    In this thesis, speaker verification and audio diarization tasks are studied. The aim of speaker verification is to determine whether two utterances are spoken by same speaker. Investigators from many research group ...
  • An enhanced multi-objective evolutionary algorithm (MOEA/D-DE) for the applications of analog sizing with both W/L and a novel operating point driven (OPD) based methods 
    Pak, Murat. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2011., 2011.)
    In today’s electronics world, due to the growing requirements of mixed signal VLSI designs and the SoCs (system on chip), the design complexity is increasing drastically. Since the well-designed CAD tools can easily support ...
  • Fusing acoustic and linguistic parameters for multilingual emotion recognition 
    Erden, Mustafa. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2011., 2011.)
    Emotion recognition from speech can be used for detection of customer problems in call centers, agent performance monitoring, improving automatic speech recognition accuracies, enhancing human robot as well as human machine ...
  • Design of low power decimation filter for sigma-delta analog digital converters 
    Kayaduman, Feyza. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2011., 2011.)
    Sigma-delta analog digital converter (   ADC) is widely used for high resolution applications such as audio applications. Sigma-delta ADC uses the oversampling process; therefore, it can reach high resolutions. Decimation ...
  • Assessing DT-MRI tractography results via sampling the fiber tract space 
    Yoldemir, Ahmet Burak. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2011., 2011.)
    Complex neural processes in human brain are realized through a huge number of connections between neural cells. White matter tractography is the only available tool to reconstruct these anatomical connectivities non-invasively ...
  • Modelling of population dynamics in cell cultures 
    Aksu, Çiğdem. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2010., 2010.)
    In this thesis, two models at different resolution levels are developed for the population dynamics of animal cell cultures at the mitotic stage. The first model is a biologically plausible cellular automata-like micro-model ...
  • Comparative evaluation of birth and death method and orthogonal matching pursuit in image analysis 
    Arslan, Fatih. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2010., 2010.)
    We present a new approach to extract predefined circular objects, such as trees and oil tanks, from aerial images. We consider a stochastic approach based on an object process also called marked point process. The objects ...
  • A portable and sensitive electrometer amplifier for astronomical use 
    Yazıcıoğlu, Ahmet Sıtkı. (Thesis (M.S.)- Bogazici University. Institute for Graduate Studies in Science and Engineering, 1981., 1981.)
    In this thesis, a portable and sensitive electrometer amplifier ehich can measure the very small starlight and provide its supply from both the mains and the 12 V carbattery is built. The design of the electrometer amplifier ...
  • Voice conversion for reconstruction of dysphonic speech 
    Tarakcıoğlu, Gönenç Seçil. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2010., 2010.)
    The medical term "dysphonia" is used for voice disorders caused by functional impairment of voice organs which results in inadequate oscillatory movement of the vocal folds. Dysphonic speech is typically hoarse, rough and ...
  • People detection in cluttered scenes 
    Öztürk, Serdar. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2010., 2010.)
    In this thesis, we have performed people detection in cluttered scenes. The people search operation in an image is performed by sliding a detection window and converting the content of each window to a feature vector. Dense ...
  • Center of gravity estimation and rollover prevention using Kalman filtering techniques 
    Dere, Ali Dinçer. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2010., 2010.)
    Due to its impacts on human safety and its economical cost, vehicle rollover is a very important safety issue that attracts the attention of major vehicle manufacturers and researchers. The objective of this thesis is to ...